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    SYSTEM AND METHODS FOR NETWORK PATH DETECTION
    1.
    发明申请
    SYSTEM AND METHODS FOR NETWORK PATH DETECTION 审中-公开
    用于网络路径检测的系统和方法

    公开(公告)号：WO2006083872A2

    公开(公告)日：2006-08-10

    申请号：PCT/US2006/003407

    申请日：2006-01-31

    Applicant: CISCO TECHNOLOGY, INC. ,  PREVIDI, Stefano ,  GUICHARD, James N. ,  VASSEUR, Jean-Philippe ,  WARD, David D.

    Inventor： PREVIDI, Stefano ,  GUICHARD, James N. ,  VASSEUR, Jean-Philippe ,  WARD, David D.

    IPC: H04L12/56 ,  H04L12/28

    CPC classification number: H04L45/026 ,  H04L43/0811 ,  H04L45/26 ,  H04L45/28 ,  H04L63/0272

    Abstract: Customer edge (CE) to CE device verification checks initiate routes from available CEs as a set of path verification messages, destined for remote CE routes serving a remote VPN. An extended community attribute, included among the attributes of the path verification message, stores the identity of the originating CE router. The path verification message propagates across the network, and transports the identity of the originating CE router because the originator identity is not overwritten by successive routing. Upon receipt by the remote CE, the originator is determinable from the extended community attribute. A further reachability field is also included in the extended community attribute and indicates whether per CE or per prefix is appropriate for the particular route in question. In this manner, CE-CE connectivity checks identify CEs which are reachable from other CEs. Accordingly, such a mechanism allows for route reachability aggregation on a per-CE or per prefix reachability basis.

    Abstract translation: 客户端（CE）到CE设备验证检查从可用的CE启动路由作为一组路径验证消息，目的地是服务于远程VPN的远程CE路由。 包含在路径验证消息的属性之间的扩展团体属性存储始发CE路由器的身份。 路径验证消息通过网络传播，并传输始发CE路由器的身份，因为始发方身份不会被连续路由覆盖。 远程CE收到后，发起者可以从扩展团体属性中确定。 扩展社区属性中还包括另外的可访问性字段，并指示每个CE或每个前缀是否适合所讨论的特定路由。 以这种方式，CE-CE连接检查可以识别可从其他CE接入的CE。 因此，这种机制允许在每个CE或每个前缀可达性的基础上进行路由可达性聚合。

    METHOD FOR IMPLICIT SESSION ROUTING
    2.
    发明申请
    METHOD FOR IMPLICIT SESSION ROUTING 审中-公开
    隐性会话路由方法

    公开(公告)号：WO2015094567A1

    公开(公告)日：2015-06-25

    申请号：PCT/US2014/066629

    申请日：2014-11-20

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： BOSCH, Hendrikus G. P. ,  GUICHARD, James N. ,  WARD, David D. ,  DUMINUCO, Alessandro ,  FERNANDO, Rex E. ,  QUINN, Paul

    IPC: H04L12/707 ,  H04L12/713 ,  H04L12/715

    CPC classification number: H04L45/20 ,  H04L45/04 ,  H04L45/24 ,  H04L45/28 ,  H04L45/586

    Abstract: An example method is provided in one example embodiment and includes receiving a packet of a session from a previous hop router at a service zone of a service chain; recording the previous hop router for the session; determining an appliance to service the packet in the service zone using load balancing; recording an appliance identity for servicing the session in the service zone; determining a next hop router in the service chain for the packet using load balancing; and recording the next hop router for the session.

    Abstract translation: 在一个示例实施例中提供了示例性方法，并且包括从服务链的服务区的前一跳路由器接收会话的分组; 记录会话的上一跳路由器; 确定使用负载平衡来服务所述服务区中的分组的设备; 记录在服务区域中为会话服务的设备身份; 使用负载平衡确定所述分组的服务链中的下一跳路由器; 并为会话记录下一跳路由器。

    NETWORK SERVICE HEADER METADATA FOR LOAD BALANCING
    3.
    发明申请
    NETWORK SERVICE HEADER METADATA FOR LOAD BALANCING 审中-公开
    用于负载均衡的网络服务头元数据

    公开(公告)号：WO2016094907A1

    公开(公告)日：2016-06-16

    申请号：PCT/US2015/065610

    申请日：2015-12-14

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： GUICHARD, James N. ,  QUINN, Paul ,  WARD, David D. ,  PIGNATARO, Carlos M.

    IPC: H04L29/08 ,  H04L29/06 ,  H04L12/721 ,  H04L12/851

    CPC classification number: H04L47/125 ,  H04L45/306 ,  H04L45/38 ,  H04L45/74 ,  H04L47/2408 ,  H04L47/2441 ,  H04L67/02 ,  H04L67/1023 ,  H04L67/327 ,  H04L69/22 ,  H04W72/0486

    Abstract: A method for load balancing based on metadata in a network service header. The method includes receiving a packet or frame of a traffic flow, wherein the packet or frame has a payload and the network service header including metadata and service path information for the traffic flow identifying the service path, and the metadata comprises classification information of the packet or frame, extracting, by a service header processor of the load balancer, the classification information of the metadata from the packet or frame, and applying, by a load balancing function of the load balancer, a load balancing policy on the packet or frame based on the classification information of the metadata.

    Abstract translation: 一种基于网络服务头部元数据的负载均衡方法。 所述方法包括接收业务流的分组或帧，其中所述分组或帧具有有效载荷，并且所述网络服务报头包括标识所述服务路径的业务流的元数据和服务路径信​​息，并且所述元数据包括所述分组的分类信息 或帧，由负载平衡器的服务头处理器从分组或帧中提取元数据的分类信息，并通过负载平衡器的负载平衡功能应用基于分组或帧的负载均衡策略 关于元数据的分类信息。

    OPTIMIZED BORDER GATEWAY PROTOCOL BEST PATH SELECTION FOR OPTIMAL ROUTE REFLECTION
    4.
    发明申请
    OPTIMIZED BORDER GATEWAY PROTOCOL BEST PATH SELECTION FOR OPTIMAL ROUTE REFLECTION 审中-公开
    优化边界网关协议最佳路径选择最佳路由反射

    公开(公告)号：WO2016133821A1

    公开(公告)日：2016-08-25

    申请号：PCT/US2016/017786

    申请日：2016-02-12

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： PATEL, Keyur ,  BAYRAKTAR, Serpil ,  BHARDWAJ, Manish ,  WARD, David D. ,  PITHAWALA, Burjiz

    IPC: H04L12/717

    CPC classification number: H04L45/24 ,  H04L45/12 ,  H04L45/42 ,  H04L67/10

    Abstract: Embodiments are provided for optimized best path selection for optimal route reflection and include configuring, by a cloud-based node, a first cluster of nodes in an autonomous system, and determining whether any paths for a network address prefix are available in the first cluster of nodes. Embodiments also include selecting a best path from one or more paths if the one or more paths are determined to be available in the first cluster for the network address prefix. Embodiments further include advertising the best path to one or more nodes in the first cluster. More specific embodiments include determining, if no paths for the network address prefix are available in the first cluster, another path for the network address prefix is available in a second cluster of nodes of the autonomous system, and selecting the other path as the best path.

    Abstract translation: 提供实施例用于优化最佳路径选择以优化路线反射，并且包括由基于云的节点配置自治系统中的第一个节点集群，以及确定网络地址前缀的任何路径是否可用于第一集群 节点。 实施例还包括：如果确定一个或多个路径在网络地址前缀的第一簇中可用，则从一个或多个路径选择最佳路径。 实施例还包括向第一集群中的一个或多个节点广告最佳路径。 更具体的实施例包括确定如果第一集群中没有网络地址前缀的路径可用，则网络地址前缀的另一路径在自治系统的第二节点簇中可用，并且选择另一路径作为最佳路径 。

    LOOP PREVENTION TECHNIQUES USING ENCAPSULATION MANIPULATION OF IP/MPLS FIELD
    5.
    发明申请
    LOOP PREVENTION TECHNIQUES USING ENCAPSULATION MANIPULATION OF IP/MPLS FIELD 审中-公开
    使用IP / MPLS领域的封装调度的环路预防技术

    公开(公告)号：WO2006107875A2

    公开(公告)日：2006-10-12

    申请号：PCT/US2006/012317

    申请日：2006-04-03

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： SCUDDER, John Galen ,  WARD, David D. ,  FILSFILS, Clarence

    IPC: H04L12/56 ,  H04J1/16 ,  H04J3/14 ,  G08C15/00 ,  H04L12/28

    CPC classification number: H04L45/22 ,  H04L45/02 ,  H04L45/28 ,  H04L45/50 ,  H04L47/2408

    Abstract: A fast reroute (FRR) technique is implemented at the edge of a computer network. In accordance with the technique, if an edge device detects a node or link failure that prevents it from communicating with a neighboring routing domain, the edge device reroutes at least some data packets addressed to that domain to a backup edge device which, in turn, forwards the packets to the neighboring domain. The rerouted packets are designated as being "protected" (i.e., rerouted) data packets before they are forwarded to the backup edge device. To that end, the edge device incorporates an identifier into the rerouted data packets to indicate that the packets are being FRR rerouted. The identifier may be a predetermined value stored at a known location in the rerouted packets' encapsulation headers, such as in their MPLS or IP headers. Upon receiving a data packet containing the identifier, the backup edge device is not permitted to reroute the packet a second time.

    Abstract translation: 快速重路由（FRR）技术在计算机网络的边缘实现。 根据该技术，如果边缘设备检测到阻止其与相邻路由域进行通信的节点或链路故障，则边缘设备将寻址到该域的至少一些数据分组重新路由到备用边缘设备， 将数据包转发到相邻域。 重新路由的数据包在被转发到备份边缘设备之前被指定为“保护”（即重新路由）数据分组。 为此，边缘设备将标识符合并到重新路由的数据分组中，以指示分组正在被FRR重新路由。 标识符可以是存储在重新路由的分组的封装头部中的已知位置处的预定值，例如在其MPLS或IP报头中。 在接收到包含标识符的数据包时，不允许备份边缘设备再次重新路由数据包。

    AUTOMATIC OPTIMAL ROUTE REFLECTOR ROOT ADDRESS ASSIGNMENT TO ROUTE REFLECTOR CLIENTS AND FAST FAILOVER IN A NETWORK ENVIRONMENT
    7.
    发明申请
    AUTOMATIC OPTIMAL ROUTE REFLECTOR ROOT ADDRESS ASSIGNMENT TO ROUTE REFLECTOR CLIENTS AND FAST FAILOVER IN A NETWORK ENVIRONMENT 审中-公开
    在网络环境中为路由反射器客户和快速故障切换器自动优化路由反射器根地址分配

    公开(公告)号：WO2016133831A2

    公开(公告)日：2016-08-25

    申请号：PCT/US2016/017909

    申请日：2016-02-13

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： PATEL, Keyur ,  BAYRAKTAR, Serpil ,  BHARDWAJ, Manish ,  WARD, David D. ,  PITHAWALA, Burjiz

    IPC: H04L12/717 ,  H04L12/753

    CPC classification number: H04L45/02 ,  H04L45/127 ,  H04L45/42 ,  H04L45/48 ,  H04L45/74

    Abstract: Embodiments are provided for providing optimal route reflector (ORR) root address assignment to route reflector clients and fast failover capabilities in an autonomous system, including identifying a first node in an autonomous system as a candidate root node of a first routing group, identifying a client node based on a neighbor address used in a first routing protocol, mapping the neighbor address to routing information received from the client node via a second routing protocol, and associating the neighbor address with the first routing group if the routing information includes an identifier of the first routing group. In more specific embodiments, identifying the first node as a candidate root node includes determining the first node and the first routing group are advertised in a first protocol packet, and determining the first node and the second routing group are advertised in a second protocol packet.

    Abstract translation: 提供实施例用于向自治系统中的路由反射器客户端和快速故障转移能力提供最优路由反射器（ORR）根地址分配，包括将自治系统中的第一节点标识为候选根节点 第一路由组，基于在第一路由协议中使用的邻居地址标识客户端节点，将邻居地址映射到经由第二路由协议从客户端节点接收到的路由信息​​，以及如果相邻地址与第一路由组关联 路由信息包括第一路由组的标识。 在更具体的实施例中，将第一节点标识为候选根节点包括确定第一节点和第一路由组在第一协议分组中被通告，并且确定第一节点和第二路由组以第二协议分组被通告。

    PSEUDOWIRE LOAD BALANCING
    9.
    发明申请
    PSEUDOWIRE LOAD BALANCING 审中-公开
    PSEUDOWIRE负载平衡

    公开(公告)号：WO2008127878A1

    公开(公告)日：2008-10-23

    申请号：PCT/US2008/059204

    申请日：2008-04-03

    Applicant: CISCO TECHNOLOGY, INC. ,  WARD, David D. ,  MARTINI, Luca ,  GUICHARD, Jim

    Inventor： WARD, David D. ,  MARTINI, Luca ,  GUICHARD, Jim

    IPC: G01R31/08

    CPC classification number: H04L45/24 ,  H04L41/0668 ,  H04L45/10 ,  H04L45/28 ,  H04L45/68 ,  H04L47/10 ,  H04L47/125 ,  H04L47/26

    Abstract: In one embodiment, a communications distribution process maintains at least two pseudowires through a network such that the pseudowires share a burden of delivering data through the network. The communications distribution process receives feedback data concerning operation of each pseudowire. The communications distribution process utilizes the feedback data to distribute communications to the common destination across each of the pseudowires. Additionally, the communications distribution process utilizes the feedback to establish at least one new pseudowire, in addition to the first pseudowire and the second pseudowire, for transmission of data traffic.

    Abstract translation: 在一个实施例中，通信分发过程通过网络维持至少两个伪线，使得伪线共享通过网络传送数据的负担。 通信分配过程接收关于每个伪线的操作的反馈数据。 通信分配过程利用反馈数据将通信分配到每个伪线上的公共目的地。 此外，通信分配过程利用反馈来建立除了第一伪线和第二伪线之外的至少一个新的伪线，用于数据业务的传输。

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